php小编西瓜在进行 Go 语言的开发时，经常会遇到在执行 main 函数进行测试时出现问题的情况。这种情况可能会导致程序无法正常运行或者出现意料之外的结果。为了解决这个问题，我们需要仔细排查可能的原因，并采取相应的措施来修复代码。本文将介绍一些常见的问题和解决方法，帮助开发者更好地应对这类情况。
问题内容
我几个月前编写了这个测试，它运行成功，没有任何错误，并且从未执行过 init() 函数，因为我只从测试中调用了处理程序函数，但现在它失败并出现以下错误：
/usr/local/opt/go/libexec/bin/go tool test2json -t /private/var/folders/wt/fc27nzn51rdbvwvjzkl05hlc0000gs/T/GoLand/___TestHandleRequest_in_next_api_cmd_getAllRawTransportOrders.test -test.v -test.paniconexit0 -test.run ^QTestHandleRequestE$
{"level":"fatal","msg":"no configuration found: not set","time":"2023-08-27T22:48:03+05:30"}
Process finished with the exit code 1
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我知道测试正在调用 init() 函数，但为什么不更早呢。我在这里缺少一些需要理解的东西吗？
init.go
//go:build !test
// +build !test
package main
import (
"crypto/tls"
"encoding/json"
log "github.com/sirupsen/logrus"
"os"
"lib/storage/ssm"
"next-api/aws/dynamodb"
"next-api/cmd/utils"
"next-api/config"
"next-api/http"
)
func init() {
// Log as JSON instead of the default ASCII formatter.
log.SetFormatter(&log.JSONFormatter{})
// Output to stdout instead of the default stderr
// Can be any io.Writer, see below for File example
log.SetOutput(os.Stdout)
// Only log the warning severity or above.
log.SetLevel(log.InfoLevel)
var err error
paramsRepo := ssm.NewRepository()
configID, err := utils.GetEnv("CONFIG_ID")
if err != nil {
log.Fatal("no configuration found: ", err)
}
cfg, err = config.Load(configID, paramsRepo)
if err != nil {
log.Fatal("could not load config: ", err)
}
urls := http.URLs{}
json.Unmarshal([]byte(cfg.MABES.URLs), &urls)
// configure mTLS
cert, err := tls.X509KeyPair([]byte(cfg.MABES.Certificate), []byte(cfg.MABES.PrivateKey))
if err != nil {
log.Fatal("could not create MABES certificate: ", err)
}
MABES, err = http.NewMABESClient(urls, http.WithTLS(cert))
if err != nil {
log.Fatal("could not create sofaClient client.", err)
}
NEXT = dynamodb.NewRepository(cfg.NEXT.Table)
}
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main.go
package main
import (
"encoding/json"
"fmt"
"github.com/aws/aws-lambda-go/events"
"github.com/aws/aws-lambda-go/lambda"
log "github.com/sirupsen/logrus"
gohttp "net/http"
"next-api/api"
"next-api/config"
"next-api/errors"
"next-api/http"
"next-api/http/problem"
"next-api/mabes"
"next-api/next"
)
var (
cfg config.Config
MABES mabes.Client
NEXT next.Repository
)
func main() {
lambda.Start(handler)
}
func handler(request events.APIGatewayProxyRequest) (events.APIGatewayProxyResponse, error) {
facilityID := request.PathParameters["facilityID"]
if facilityID == "" {
return events.APIGatewayProxyResponse{
StatusCode: gohttp.StatusBadRequest,
Headers: http.Headers("application/problem+json"),
Body: problem.ServerError(fmt.Errorf("missing facilityID parameter")).ToJSONResponse(),
}, nil
}
transportOrders, err := api.GetAllRawTransportOrders(facilityID, request.QueryStringParameters, MABES, NEXT)
b, err := json.Marshal(transportOrders)
if err != nil {
log.Errorln(err)
if errors.Is(errors.NEXTRead, err) {
return events.APIGatewayProxyResponse{
StatusCode: gohttp.StatusOK,
Headers: http.Headers("application/json"),
Body: fmt.Sprintf(`{"data":%s}`, string(b)),
}, nil
}
return events.APIGatewayProxyResponse{
StatusCode: gohttp.StatusInternalServerError,
Headers: http.Headers("application/problem+json"),
Body: problem.ServerError(err).ToJSONResponse(),
}, nil
}
return events.APIGatewayProxyResponse{
StatusCode: gohttp.StatusOK,
Headers: http.Headers("application/json"),
Body: fmt.Sprintf(`{"data":%s}`, string(b)),
}, nil
}
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main_test.go
package main
import (
"github.com/aws/aws-lambda-go/events"
"github.com/stretchr/testify/assert"
"net/http"
"strings"
"testing"
"time"
"next-api/api"
"next-api/mabes"
"next-api/next"
)
func TestHandleRequest(t *testing.T) {
t.Run("should return the TransportOrders", func(t *testing.T) {
req := events.APIGatewayProxyRequest{
PathParameters: map[string]string{
"facility": "11",
},
}
timeStamp, _ := time.Parse(time.RFC3339, time.Now().Format(time.RFC3339))
sofa1 := next.SofaTransferModel{}
sofa1.Phase = "1"
sofa1.PartKey.PartCode = "abcd"
sofa1.PartKey.DispatcherFacility = "11"
sofa1.PartKey.UsageCode = "01"
sofa1.Storage.Number = "00315"
sofa1.Shipment.RequestedArrivalDate = timeStamp.String()
transportOrders := make([]next.SofaTransferModel, 0)
transportOrders = append(transportOrders, sofa1)
getAllRawTransportOrdersCalls := 0
api.GetAllRawTransportOrders = func(facilityID string, params map[string]string, MABES mabes.Client, NEXT next.Repository) (next.SofaTransferObjects, error) {
getAllRawTransportOrdersCalls++
return transportOrders, nil
}
// when
res, err := handler(req)
// then
assert.Equal(t, 1, getAllRawTransportOrdersCalls)
assert.NoError(t, err)
assert.Equal(t, http.StatusOK, res.StatusCode)
assert.True(t, strings.Contains(res.Body, transportOrders[0].PartKey.PartCode))
assert.True(t, strings.Contains(res.Body, transportOrders[0].Storage.Number))
})
}
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解决方法
名为 init（全部小写）的顶级函数总是，并且总是在测试之前执行。 init 现在失败的原因，即使以前没有，现在看来，是环境的变化；即在 CONFIG_ID 设置之前，但现在没有设置，至少在执行测试的 shell 中没有设置。
https://www.php.cn/link/905d8fc4ffb4275a428a84589810f8f4
如果您使用 -tags test 运行 go test 命令，则将遵守 init.go 文件顶部的构建约束，即 //go:build !test，并且该文件将从测试中省略建造。但默认情况下，没有“test”构建标签，因此如果没有 -tags test 参数，这些构建约束将被忽略，并且 init.go 文件将包含在测试构建中。 p>
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